Solve applied problems using formulas
The distance formula, d = rt, relates d, the distance traveled, r, the rate or speed, and t,
the travel time.
Solve percent problems
An important everyday use of mathematics involves the concept of percent. Percent is written with the symbol %. The word percent means “per one hundred.” One percent means
“one per one hundred” or “one one-hundredth.”
1% = .01 or 1% = 
Solving a Percent Problem
Let a represent a partial amount of b, the base, or whole amount. Then the following formula can be used in solving a percent problem.
= 
= percent (represented as a decimal)